<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="./bulma.css">
    <script src="./vue.js"></script>
</head>

<body>
    <div id="app">
        <section class="hero is-dark">
            <div class="hero-body">
                <div class="container">
                    <h1 class="title">
                        待办事项列表
                    </h1>
                    <h2 class="subtitle">
                        今天的事情今天做，明天才有时间做更多的事情
                    </h2>
                    <h2 class="subtitle">
                        共{{todos.length}}件事情，待做{{unFinishedCount}}件，已做{{hasFinishedCount}}件
                    </h2>
                </div>
            </div>
        </section>
        <div class="container is-widescreen" style="margin: 30px auto;">
            <div class="columns">
                <div class="column is-one-quarter">
                    <input type="text" placeholder="输入代办事项名称" class="input" v-model="inputValue" @keyup.13="addTodo">
                </div>
                <div class="column is-one-quarter">
                    <button @click="addTodo" class="button is-primary">添加</button>
                </div>
            </div>
        </div>
        <div class="container is-widescreen">
            <nav class="panel">
                <p class="panel-heading">
                    已完成
                </p>
                <div class="panel-block columns is-multiline">
                    <div class="column is-one-quarter" v-for="todo in hasFinishedTodos" :key="todo.id">
                        <div class="card">
                            <header class="card-header">
                                <p class="card-header-title">
                                    代办事项
                                </p>
                                <a href="#" class="card-header-icon" aria-label="more options">
                                    <button class="delete" @click="removeTodo(todo.id)"></button>
                                </a>
                            </header>
                            <div class="card-content">
                                <div class="content">
                                    {{todo.title}}
                                </div>
                            </div>
                            <footer class="card-footer">
                                <a href="javascript:;" :class="['card-footer-item', todo.hasFinished ? 'has-text-success' : 'has-text-danger']">
                  {{ todo.hasFinished ? '已完成' : '未完成' }}
                </a>
                                <a href="javascript:;" class="card-footer-item" @click="toggleHasFinished(todo.id)">
                  切换为{{ todo.hasFinished ? '未' : '已' }}完成
                </a>
                            </footer>
                        </div>
                    </div>
                </div>
            </nav>
            <nav class="panel">
                <p class="panel-heading">
                    未完成
                </p>
                <div class="panel-block columns is-multiline">
                    <div class="column is-one-quarter" v-for="todo in unFinishedTodos" :key="todo.id">
                        <div class="card">
                            <header class="card-header">
                                <p class="card-header-title">
                                    代办事项
                                </p>
                                <a href="#" class="card-header-icon" aria-label="more options">
                                    <button class="delete" @click="removeTodo(todo.id)"></button>
                                </a>
                            </header>
                            <div class="card-content">
                                <div class="content">
                                    {{todo.title}}
                                </div>
                            </div>
                            <footer class="card-footer">
                                <a href="javascript:;" :class="['card-footer-item', todo.hasFinished ? 'has-text-success' : 'has-text-danger']">
                  {{ todo.hasFinished ? '已完成' : '未完成' }}
                </a>
                                <a href="javascript:;" class="card-footer-item" @click="toggleHasFinished(todo.id)">
                  切换为{{ todo.hasFinished ? '未' : '已' }}完成
                </a>
                            </footer>
                        </div>
                    </div>
                </div>
            </nav>
        </div>
    </div>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                inputValue: '',
                todos: [{
                    id: 1,
                    title: '吃饭',
                    hasFinished: true
                }, {
                    id: 2,
                    title: '睡觉',
                    hasFinished: false
                }, {
                    id: 3,
                    title: '写代码',
                    hasFinished: false
                }, {
                    id: 4,
                    title: '煮早餐',
                    hasFinished: true
                }, {
                    id: 5,
                    title: '睡午觉',
                    hasFinished: false
                }, {
                    id: 6,
                    title: '吃早餐',
                    hasFinished: true
                }]
            },
            computed: {
                hasFinishedTodos() {
                    return this.todos.filter(todo => todo.hasFinished)
                },
                unFinishedTodos() {
                    return this.todos.filter(todo => !todo.hasFinished)
                },
                hasFinishedCount() {
                    return this.todos.filter(todo => todo.hasFinished).length
                },
                unFinishedCount() {
                    return this.todos.filter(todo => !todo.hasFinished).length
                },
            },
            methods: {
                toggleHasFinished(id) {
                    this.todos = this.todos.map(todo => {
                        if (todo.id === id) todo.hasFinished = !todo.hasFinished
                        return todo
                    })
                },
                removeTodo(id) {
                    // 咱们还是从所有todos里去删，computed计算出来的属性不会直接操作
                    this.todos = this.todos.filter(todo => {
                        return todo.id !== id
                    })
                },
                addTodo() {
                    if (this.inputValue === '') return
                    this.todos.push({
                            id: Date.now(),
                            title: this.inputValue,
                            hasFinished: false
                        })
                        // 吧input清空
                    this.inputValue = ''
                }
            }
        })
    </script>
</body>

</html>